IT1050308B - (Meth)acrylonitrile recovery and purificn from ammoxidn effluent - with recycle of prod column bottoms to form quench liq in quench system - Google Patents
(Meth)acrylonitrile recovery and purificn from ammoxidn effluent - with recycle of prod column bottoms to form quench liq in quench systemInfo
- Publication number
- IT1050308B IT1050308B IT2960375A IT2960375A IT1050308B IT 1050308 B IT1050308 B IT 1050308B IT 2960375 A IT2960375 A IT 2960375A IT 2960375 A IT2960375 A IT 2960375A IT 1050308 B IT1050308 B IT 1050308B
- Authority
- IT
- Italy
- Prior art keywords
- quench
- acrylonitrile
- effluent
- recovery
- liq
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In the recovery and purification of acrylonitrile produced by the reaction of propylene, O2 and NH3 in the presence of an ammoxidation catalyst, which consists of (a) contacting the ammoxidation reactor effluent with an aq. quench liquid in a quench system to produce a gaseous quench effluent having a temp. of 90-230 degrees F, (b) removing this effluent and absorbing it in water to form a soln., (c) distilling most of the by-products of the ammoxidation reaction and most of the water from the soln. to obtain a liquid stream contg. crude acrylonitrile, and (d) distilling the crude acrylonitrile to obtain a gaseous overhead stream of product quality acrylonitrile and a bottoms stream contg. acrylonitrile and impurities and having a pH of 3-5, the improvement comprises recycling part of the liq. bottoms stream obtd. in step(d) as at least part of the quench liquid in step (a). This improvement may also be applied to the recovery and purification of methacylonitrile by ammoxidation of isobutylene. There is no need for the fractional distillation column of prior art. and the efficiency of the recovery and purification system is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2960375A IT1050308B (en) | 1975-11-24 | 1975-11-24 | (Meth)acrylonitrile recovery and purificn from ammoxidn effluent - with recycle of prod column bottoms to form quench liq in quench system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2960375A IT1050308B (en) | 1975-11-24 | 1975-11-24 | (Meth)acrylonitrile recovery and purificn from ammoxidn effluent - with recycle of prod column bottoms to form quench liq in quench system |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1050308B true IT1050308B (en) | 1981-03-10 |
Family
ID=11228084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2960375A IT1050308B (en) | 1975-11-24 | 1975-11-24 | (Meth)acrylonitrile recovery and purificn from ammoxidn effluent - with recycle of prod column bottoms to form quench liq in quench system |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1050308B (en) |
-
1975
- 1975-11-24 IT IT2960375A patent/IT1050308B/en active
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